Course Information
Course Objectives
Course Structure Course
Materials
UsingCourseMaterials
CourseSchedule
Biology 101 Labs
Grades
ELI Policies
Communication
E-mail
Office Hours
FAQs
Resources
Videos
WebQuizzes
StudyGuideAnswers
Home
|
|
Online
Onion Root Tips Activity at the University of
Arizona's Biology Project.
|
-
Read
the first three pages of this web area on
the Biology Project, Onion
Root Tip Activity. The first two pages
of this exercise explains mitosis and its
stages. Print page 3. At the end
of the exercise, you will fill out the chart
on time spent in each stage.
-
The
actual exercise starts on page 4. In
the upper right corner of the screen, you
will see a photomicrograph of an onion root
cell in either interphase or one of the stages
of mitosis. Under the photo are the
terms interphase, prophase, metaphase, anaphase,
and telophase. Look at the photo and
determine which stage you think describes
the cell. Click on that term. If you
are correct, the cell will be placed under
the term, you will be informed that you are
correct, and a new cell will appear for you
to classify. If you are not correct,
you will be asked to try again.
-
You
will repeat this process for a total of 36
cells. After you have completed classifying
all the cells, print this cell classification
sheet. Now complete the chart on page
three that you previously printed. For
example if, at the end of this exercise, you
find that 9 of the 36 cells were in interphase,
write 9 in the square for number of cells
in interphase and 25% in the square for percent
of cells. Hint - this is NOT correct
|
|
Interphase |
Prophase |
Metaphase |
Anaphase |
Telophase |
Total |
number of cells |
9
|
|
|
|
|
36
|
percent of cells |
25
|
|
|
|
|
100
|
|
-
Complete exercises II through IV of Lab 7 (pages
Lab7-2 through Lab 7-5) in the .SG/LM. Fill out
the answer sheets on pages Lab 7-6 through Lab
7-8 as you work the exercises.
|
|
-
Mail or e-mail Lab 7
cell
classification sheet and the chart
on time spent in each stage from the
Onion Root Tip Activity.
Answer
sheets on pages Lab 7-6 to 7-8.
|
|